How to reference images in css? How to reference images in css

How to reference images in css? What are the steps to reference images in css? This article will introduce to you how to reference images in CSS. Friends in need can refer to it. I hope it will be helpful to you.

Write pictures to css: css reference pictures

css reference pictures Step 1: Create a new images folder in the src directory and put a picture in it

css Reference image Step 2: Insert a block in index.html

For example:

css The third step of quoting the image: Insert the background image for #pic in index.css in the css directory

css The fourth step of quoting the image: Enter webpack in the terminal to package the error. You need to configure ffile-loader and url in the terminal. -loader

npm install –save-dev file-loader url-loader

Installation successful

Enter in the terminal:

Step 5 of css reference image: Configure ==url-loader== in ==module== in webpack-config.js (url-loader includes file-loader, so there is no need to configure file-loader)

//模块：例如解读CSS,图片如何转换，压缩module:{
     rules: [
         {
           test: /\.css$/,           use: [ 'style-loader', 'css-loader' ]
         },{
            test:/\.(png|jpg|gif)/ ,            use:[{
                loader:'url-loader',
                options:{
                    limit:500000
                }
            }]
         }
       ]
 },

test:/.(png|jpg|gif)/ is the suffix name of the matching image file.

use: It is the configuration parameter that specifies the loader and loader used.

limit: Files smaller than 500000B are formatted into Base64 format and written into JS.

Css reference image Step 6: Enter ==webpack== in the terminal for packaging

css reference image Step 7: npm run server for browser preview

Note :

• [x] url-loader encapsulates file-loader. url-loader does not depend on file-loader. Even when using url-loader, you only need to install url-loader. There is no need to install file-loader because url-loader has built-in file-loader.

• url-loader work is divided into two situations:
  

• If the file size is less than the limit parameter, url-loader will The file will be converted to DataURL (Base64 format);

• The file size is greater than the limit, url-loader will call file-loader for processing, and the parameters will be passed directly to file-loader. (In fact, we only need to install one url-loader. But for the convenience of future operations, we will install file-loader here.)

• There is no need to configure url-loader Introduced above, you only need to introduce it in webpack-config.js when you want to introduce a plug-in.

Related recommendations:

Sometimes css references image packaging What is the reason why the resource file cannot be found?

About the problem of image reference URLREWRITE.

The above is the detailed content of How to reference images in css? How to reference images in css. For more information, please follow other related articles on the PHP Chinese website!